Display Response Times

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Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.

↔ Response Time Black to White

32 ms ... rise ↗ and fall ↘ combined

↗ 18 ms rise

↘ 14 ms fall

The screen shows slow response rates in our tests and will be unsatisfactory for gamers.In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 82 % of all devices are better.This means that the measured response time is worse than the average of all tested devices (25.6 ms).

↔ Response Time 50% Grey to 80% Grey

48 ms ... rise ↗ and fall ↘ combined

↗ 26 ms rise

↘ 22 ms fall

The screen shows slow response rates in our tests and will be unsatisfactory for gamers.In comparison, all tested devices range from 0.9 (minimum) to 636 (maximum) ms. » 78 % of all devices are better.This means that the measured response time is worse than the average of all tested devices (41 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

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To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.

Screen flickering / PWM detected

25000 Hz

≤ 90 % brightness setting

The display backlight flickers at 25000 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 90 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 25000 Hz is quite high, so most users sensitive to PWM should not notice any flickering.

In comparison: 52 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8929 (minimum: 43 - maximum: 142900) Hz was measured.

(±) The average temperature for the upper side under maximal load is 36.1 °C / 97 F, compared to the average of 29.4 °C / 85 F for the devices in the class Office.(-) The maximum temperature on the upper side is 60 °C / 140 F, compared to the average of 33.9 °C / 93 F, ranging from 21.2 to 62.5 °C for the class Office.(-) The bottom heats up to a maximum of 57 °C / 135 F, compared to the average of 36.4 °C / 98 F(+) In idle usage, the average temperature for the upper side is 27.5 °C / 82 F, compared to the device average of 29.4 °C / 85 F.(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 26.6 °C / 79.9 F and are therefore cool to the touch. (±) The average temperature of the palmrest area of similar devices was 28.3 °C / 82.9 F (+1.7 °C / 3 F).

Lenovo ThinkPad E580-20KS001RGE audio analysis

(-) | not very loud speakers (64.9 dB)Bass 100 - 315 Hz(±) | reduced bass - on average 12.4% lower than median(+) | bass is linear (5.4% delta to prev. frequency)Mids 400 - 2000 Hz(±) | higher mids - on average 6.4% higher than median(±) | linearity of mids is average (8.2% delta to prev. frequency)Highs 2 - 16 kHz(+) | balanced highs - only 3.5% away from median(+) | highs are linear (5.2% delta to prev. frequency)Overall 100 - 16.000 Hz(±) | linearity of overall sound is average (18.1% difference to median)Compared to same class» 30% of all tested devices in this class were better, 9% similar, 60% worse» The best had a delta of 8%, average was 21%, worst was 51%Compared to all devices tested» 31% of all tested devices were better, 7% similar, 62% worse» The best had a delta of 3%, average was 21%, worst was 53%

Dell Latitude 5580 audio analysis

(-) | not very loud speakers (71 dB)Bass 100 - 315 Hz(±) | reduced bass - on average 14.1% lower than median(+) | bass is linear (4.8% delta to prev. frequency)Mids 400 - 2000 Hz(+) | balanced mids - only 3.8% away from median(+) | mids are linear (5.4% delta to prev. frequency)Highs 2 - 16 kHz(+) | balanced highs - only 2% away from median(+) | highs are linear (2.1% delta to prev. frequency)Overall 100 - 16.000 Hz(+) | overall sound is linear (13.2% difference to median)Compared to same class» 5% of all tested devices in this class were better, 4% similar, 91% worse» The best had a delta of 8%, average was 21%, worst was 51%Compared to all devices tested» 10% of all tested devices were better, 2% similar, 88% worse» The best had a delta of 3%, average was 21%, worst was 53%